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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45e76f100b55bc38a9f7345396b52b75a206d6784542c6312f3902cccf24a5ee' 
  AND token = '+Qc+qrzPB+GKEarl6c+lDM2JTWGJZl4WIO4kX91ePos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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