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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '44f4026e39122eee69fca6fcf7a61e4b5838fc6e6e187e7a2ceeed6396a5a96b' 
  AND token = 'p4f62+9FM2G+8SX1Lv4pIPctMCZCNXDQubX4q33xx1g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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