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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fca97036233efaff909ff4181b96b14b6add7e91426b0e2b1dc90af3b59c5bda' 
  AND token = 'iw+1wkj/vul/UCl9viEc3aZirx7ZfpPCuY9o0TK09nc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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