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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43b05e7ef77cc25303bfc265341ec22913bc01b7e4d71f183834a47ad9ab621c' 
  AND token = 'G1hg0TCwB39V+v4arKH2oV30Ftf3FjfeLHciNnp+dUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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