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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95a65a80ddc84364e1a946a57d49eec675ebdf7d115444947c51377b9ea30c2f' 
  AND token = 'b2YGOTl0KOGJ22fbUiPBLdYrvULrESIQR0P1CbZL2bA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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