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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fadc39597f910553e0f00f653918ccecde2ecd21f8bc515b002926c616654cf1' 
  AND token = 'WI64o7RRuNG/GALlB0PQPCYKVn+L7VvTrGxLGikkf0I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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