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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6052bd677ce5af021711d26bf4c7628ef664bb82a24c311acbb3fdfb070692ab' 
  AND token = 'y/dNGYUfPw+aOMJrrteQuzsMQ4CHkEwylqb+WfstYvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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