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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b0600c1b07e5b18bd4905317d1053a62120f86081431e4e0835e599c067d9fe2' 
  AND token = 'kik8om2uxfno6/B4ngOTr6nd14pJbtX+lwKGG/tjSxY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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