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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'adaaf030600235bfd2099e4f631092747ad25d180e187e50e5cc42eff69dd6aa' 
  AND token = 'JGtL8a74MzNTJO6E9rA1Y9J/UA7mZwrNRFGgYEPb5Us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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