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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07d9de6c7b0dd896a336ac866d19e534ca824c9d4dc179a7725bc37d875659b2' 
  AND token = '5tHyMpeGN1OX31J1wy0S1eq5sFqSOBFWWnW6dr3sCE4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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