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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fba7292970a7a0de0944f1ec592946b4dae6cad7554d20521df9317015eeece0' 
  AND token = 'TCee2PIapD62j1VbcphcU8kG7v+qko7Sz+J3z0G3VpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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