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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1cb668db3508c9c447cb132ddac2e2d1827ad86c1433b78827d58eae4c5108e' 
  AND token = 'cujU00HDBDxdi1e2cAu/N2nPICtp+ipK4lZCqgi4aME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}