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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3dfd971a0b1ab040ba9740538a7076389406d1354d63af70dbfcbdae2ef4656f' 
  AND token = 'q00hEXL9P03iIUx4zCrp9q4d/opvqw/2nxWGggaQ3+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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