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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9ed3bf90f8df46cad3a8f5a6bd639b3e2bfdfb6c00203b638c2c68492fba8ff6' 
  AND token = '54W38WvGmED0OssXBR7fShseVeUCRap1Zm6VLYm96NQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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