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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61d2c1385d9c6f2721a9eaff112fc010a47e70909baf1f8506eefe3e733b24b3' 
  AND token = 'Gl9w/YVyX4nCGp2Yl/d1iWFuK7Hkxko8osyjDSzgyag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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