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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47ce2194d235f5fa4441cc080e1132523792e6bc4df8e4d8282f497b8c914a0e' 
  AND token = '8E2nGa0Nd5rr3IS4NkurFDAVBeNwYW6l7ckVNFV+QiQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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